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| Fri 06 Nov 2026
Beijing, Nov. 6 -- Hongrun Petrochemical Weifang has been granted a patent for Domestic Sewage Treatment Device. This invention was developed by Jung Chang Don, Chen Xin, Liu Shuai, Xie Yuandong, Liu Gang, Wang Yuankai, Zhang Chen, Zhang Lifu, Zhao Yusong, Wu Huchang, Wang Guoqiang, Li Chunhui, Chen Cheng and Wang Bo.
The pat..